Hello Steve,
The blue fringe is chromatic aberration. This happens when light rays do not focus correctly and is usually a sign of lower quality optics.
Hi Steve,
Less exposure will reduce it significantly.
It looks a little overexposed around the edge to me anyway.
Your EXIF:
Camera Maker: NIKON CORPORATION
Camera Model: NIKON D300S
Image Date: 2010:05:20 19:28:47
Focal Length: 240mm (35mm equivalent: 360mm)
Aperture: f/5.0
Exposure Time: 0.010 s (1/100)
ISO equiv: 200
Exposure Bias: none
Metering Mode: Spot
Exposure: program (Auto)
White Balance: Auto
Flash Fired: No
Given the shutter speed and focal length, I assume it was a tripod shot, so go for f8 next time.
Cheers,
Yes, It was a tripod shot. Thanks for the comments. I just am intrigued by shooting the moon and getting the detail of the craters.
Dave, what are you reading exif with? I have IExif, and it is telling me there is none.